539895709 has 4 divisors (see below), whose sum is σ = 540365116. Its totient is φ = 539426304.

The previous prime is 539895679. The next prime is 539895737. The reversal of 539895709 is 907598935.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 492973209 + 46922500 = 22203^2 + 6850^2 .

It is a cyclic number.

It is not a de Polignac number, because 539895709 - 2¹⁹ = 539371421 is a prime.

It is a super-2 number, since 2×539895709² = 582974753193225362, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 539895709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (539895739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232974 + ... + 235279.

It is an arithmetic number, because the mean of its divisors is an integer number (135091279).

Almost surely, 2^539895709 is an apocalyptic number.

It is an amenable number.

539895709 is a deficient number, since it is larger than the sum of its proper divisors (469407).

539895709 is a wasteful number, since it uses less digits than its factorization.

539895709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469406.

The product of its (nonzero) digits is 3061800, while the sum is 55.

The square root of 539895709 is about 23235.6559838538. The cubic root of 539895709 is about 814.2728576536.

The spelling of 539895709 in words is "five hundred thirty-nine million, eight hundred ninety-five thousand, seven hundred nine".